i like 2 turnover cycles of 5 to 6 hours each depending on pool, pump and filter size. that works for me and gives me a cycle in the evening where i can tweak chemicals as necessary and still give them a full turnover cycle. (i.e. the bleach i've been putting in for past 2 days..a couple of jugs in the morning at start of the cycle, then when i get home tonight at 5, i'll put some more in and have the next cycle start.) once you get in season, you may want to adjust your cycles due to having a pump heater running for example (if you need that in your area)